The big companies are the private industry. But they're faced with a short-term need to show a profit in short-term.

Climate has been changing for billions of years.

I failed music when I was a teenager.

What comes after the moon? I think you can guess: Mars.

I shot down two airplanes in Korea, so I wasn't a slouch.

We're number one on the runway.

Space architectures capable of supporting a permanent human presence on Mars are extraordinarily complex, with many different interdependent systems.